Patent attributes
The present invention relates to a process for producing a toner for electrophotography, including:(a) a step of aggregating resin particles containing a resin binder in an aqueous medium; and(b) a step of unifying the aggregated resin particles,the step (a) including:(a-1) a step of adding a monovalent salt as an aggregating agent; and(a-2) a step of adding at least one compound selected from the group consisting of alkylethersulfates represented by the formula (1):R—O—(CH2CH2O)nSO3M (1)wherein R is an alkyl group; n represents an average molar number of addition and is a number of more than 0 and not more than 15 (0<n≦15), and M is a monovalent cation, alkylsulfates and linear alkylbenzenesulfonates. The toner of the present invention has a small particle size which is controlled with a high accuracy, and a sharp particle size distribution, and a particle shape of the toner is readily controlled even at a low temperature, and further the obtained toner exhibits a high circularity.
